Clutch



Patented May 3, 1927.

'unirse STATES PArENroF-Fics.

CARL M. ANGIJEMYER, DAYTON, AND WILLIAM I. COFFMAN, 0F DUNK-IRK, OHIO,

ASSIGNORS TO THE EDGEMONT MACHINE COMPANY, O'F DAYTON, OHIO, A COR- PORATION OF OHIO.

CLUTCH.

Application filed January 8, 1924.

lhisinvention relates to friction clutches of the expanding type, and more particularly to improved means for effecting 'the eX- pansion of the clutch element and for effecting adjustment Yof the clutch parts to compensate for wear.

1n this construct-ion there is contemplated a split rin-g or maleelement Vof 'tapered or conical form having `engagement within a correspondingly tapered female member or seating ring. The female member or seating` ring is axially adjustable in relation to the tapered male mem-ber to compensate Ifor `wear or to vary the frictional engagement or pressure ofthe parts. The split ring or expanding male member is internally enlargedA or increased in thickness to accommodate the key or other interlockingr means by which itis connected with its support or with the driving or. driven velement as fthe case may be in order that the provision of such key way or ,recess for the interlocking elements may not weaken the clutch ring at such points.

This split ring or expanding Imale member is designed to afford `substantiallyuniform resistance to expansion throughout its periphery thereby affording uniform and equal frictional engagement. Provision is `made for expanding such split ringy or male member with minimum effort by transmitf ting the wedging or camming effect of the actuating member to such split ring through a pair of operating rlevers, having engage ment with the ends of the split :ring and with the actuating member.

The object of `the invention is to simplify `the structure as .well as the means and mode of operation of expanding clutches whereby .they will not only Abe cheapened in construc-` tion, but will be more eficient in operation, uniform in action. easily and readily controlled and unlikely to get .out ofrepair.

A further object .of the invention isxto provide improved means for adjusting the clutch parts to compensate for wear or to vary the pressure `of their frictional engagement.

A further object ofthe invention is to provide improved means for expanding the clutch member, whereby the member `may be` expanded into driving engagement by minimum effort, the effect of such effort being multiplied iby suitable lleverage connect-ions with the clutch member.

Serial No. `684,987'.

l/Vith the above primary and other in- `bodiuwnt'of the invention, Fig. 1 4is .an exterior view of the assembled clutch mechamsm embodying the present invention. Fig. 2 is a longitudinal sectional View of [the assembled mechanism online Q-2 of Fig. `l. Fig. 3 isa transverse sectional view on line 3-8 ofy Fig. 2.' Fig. 4t is a detail ysectional view illustrating the expanding means for the internal clutch ring. Figs. 5 yand 6 lillustrate modifications Aof the adjusting feature. p

Like parts are 'indicated by similar characters of reference throughout the several views.

In the drawings l'indica'tesrthe shaft and Q-.a sleeve revolubly mounted upon :the shaft and to be intermittently connected therewith. This sleeve may ycarrry a pulley or any other clement which it may be desired :to intermittently connect with the shaft 1, for rotation in unison therewith. @bviously either the shaft l, or the sleeve and its supported ele ment may be the driver or the dri-ven mem ber. The sleeve 2 .is 'provided with an enlarged recessed hub 8, which forms a housing for the clutch parts. Mounted within lthe housing or hub 3 and keyed thereto for rotation in unison with thehub and sleeve, but capable .of independent axial :adjustment Ais an internally tapered ring l, forming the female element of the .clutch or the seating ring. This external clutch ring or female element t is of such width that itprojects somewhat beyond :the housing or hub 3 and such projecting portion of the clutch ring 4C is externally screw threaded at 5. Concentrically located with the external clutch .ring 4 is a split ring '6 Vhavinga tapered or conical periphery agreeing withv the interior of the female ring 4L and constituting 'the fexpandiing male element of vthe clutch. rThe split ring G` is carried by theshaaft mounted parts, while .the ring 4 is carried by the hub 3 and sleeve l2,revolubly .mounted upon the shaft. The rings 4 and 6 are therefore the direct coupling members, connecting the sleeve, and shatt and consequently rotate in unison with corresponding parts. The split ring or male element 6 is internally enlarged at 7. to aceoimnodate ay key way or recess to receive a key or interlocking` member 8, by which the split ring; or expanding male member is interengaged with a` sleeve `lier unison rotation therewith. The sleeve 9 is tixedly mounted upon the sha'lt 1, and car ried therelgiy This connection may be by means et av key or spline 10, er by other suitable connection. By providing the internal enlargement 7 of the split ring;` er male member. the provision et the key way or slot tor the key 8 will not weaken the eX- pandingr member at this point, in fact the bottom of the key way isrecessed at 11 to reduce the thickness et t-he expanding! ring beneath the key to approximately a 'dimension equal to that throughout other portions et the ring', thereby assuring' uniformity ol2 expansion, and etpializinev the trictienal enlsagement et the ring; throughout the tull circle oi operation. rlhe extension el the recess at 'l 1 is et slightly less width than the key S. thereliy leaving sl'ioulders or rabbcts 11 at opposite sides et the recess in which the key 8 is seated.

AdjacentI to the split 12 et the ei-pandiiur ring' Ithe ring' is enlarged internally at 1?. to accennnodate the expanding devices and is indented or rabbeted to a iliord shoulders 14;, .tor their engagement. Intel-posed between the shoulders 14. is a. pair et operatinglevers 15, interpivoted or itulerumed one upon the other at 1G. As a simple and eiiirient term et liulcrum, the levers 15 are provided with repgistering.l notches which engage the opposite sides oli a Ytulcruln stud or pin li', which is commen to both the operatingY levers 15. On their outer Faces the levers l5 are formed with semi-circular notches 18, which eng'aee Correspendingl beads er lian f1 19 upon pressure shoes 2O interposed between the operating levers 15 and the shoulw ders 14; et the expanding* ring. rlhe tree ends ot' the operating` levers l5 are engaged by ay wedge or cam actuator 21, which is carried by a shift collar 22, slidinsly mountu ed upon the sleeve 9. To protect the parts and as a Q;uide for the shift collar in its to and tro increment, there is provided a flat finger er plate-like extension 2?) upon the shitt. collar 9,2, which overlies the actuating cam or wedge 21 and the operating' levers 15 and extends within a recess 25 located inu termediate the shoulders or rabhets la, in the expanding` ring er male clutch member G. The recess and shoulders lll torni in effect double rabbets on opposite sides et the split in the expanding ring. An adjusting; collar 27 is revolubly mounted upon the internal or shaft carried sleeve 9 and bears against the outer 'tace et the internal or eX- panding ring G, and at the same time has screw threaded engagement with the external thread i et' the female or seating` ring'. The collar 2i' is confined against aaial movement between the hub or housing' 3 at one side and a peripheral lange .0 en the sleeve at its opposite side. This permits .tree rotary movement, but prevents atrial movement ot the cellar Q7, rl"hc collar is locked in its adjusted position by a set screw 2T engaging' the seating' ring' il. By the revoluble adjustment et this collar 2T the female or seating` ring;` l may be adjusted axially in relation to the male or inner ring (i. By such adjustment the male or inner ring` G caused to enga-.ge at greater or less depth within the tapered interior et the 'female or seating ring -l. Due vto the ditierent relative diamete ot the seating ring and e.\' panding;v ring or niale inen'iber when engaged at di'tlerent depths, due to their tapered or conical term, any wear or .lost motion is 'oinpensated lor or the parts a e adjusted to elliec' their engagement 'ith greater or less pressure. rlhis ability to adjust the interenrragjine' clutch members axially in' relation one to the other independent et the relative expansion and contraction is quite an important teature.

`While the construction heretofore scribed is to be preterred, it is obvious various moditications of such adjusting teatures may be employed. rlwo such modifi cations are shown in the detail views and G. In Fig. 5 the adjusting; ring QT is threaded upon the housing` or hub member, and is provided with an inward extrndinpr flange bearing against the outer lateral 'tare et the expandingh ring' or male n'ieinber (i. By adjusting` the collar 27, the male inem ber er expanding;` ring' is pressed more decplj within the seating or 'female member. ln this instance, the female member or scatiircj ringl e may be termed integral with the hub or mountingl member. That is to say, the interior ol the housing or mountiim' n hc ot' tapered er conical term to perlorni the function ofi the seating' ring: lin the detail view Fig: 6, the adjusting collar 27h is shown screw threaded upon the shal't carried sleeve 9, and engages the Lxpandingv ring G to press it more deeply within the surroumlinpr conical seat te take up lost motion or compensate, 'for wear.

From the above description it will be apparent that there thus provided a dcvice et the character' described possessing; the particular features ot' advantage before enumerated as desirable, but which obviously is susceptible et modification in its torni, proportions, detail construction and ar rangement et parts wit ieut departing from the principle involved or sacrificing` any el its advantages. i

that

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Vliile in order to Ecomply with the vstatute the invention has been described in language more or less specific as to structural `features, it is to be :understood that the invention is not limited tothe specific details shown, but that the means and construction, herein disclosed comprises the `preferred form ot several modes or' putting the invention into effect and the invention is therefore, claimed in any of its forms or inodilications within vthe vlegitimate and valid scope ot' vthe `appended claims. I s

Having thus described our invention, we claim.:

`1. In a `clutch device for enga-ging and rotatable elements, a pair oi" concentrically arranged yclutch rings having correspondingly tapered engaging faces, one `of said rings vbeing expansible and contractable, means or controlling .the .expansion and contraction ot said ring, and having simultaneous engagement with both irings, a concentric revoluble collarifozr raxially `adjusting said rings in relation to each other.

2. In a clutch mechanism `for engaging and disengaging tworelatively rotatable members, a cone clutch, one of the interengaging members of which is expansible and coiitractible, and means loi' regulating the expansion and contraction oi said member, and a concentrically arranged revoluble ad justing collar havin@ screw threaded engagement with one or such members and simultaneously bearing upon the other ineinber for relatively adjusting said members to vary their relation axially to each other.

3. In a clutch mechanism, an internally tapered clutch ring, an externally tapered clutch iing, seated within the internally tapered ring, said inner ring being split, and means 'for expanding said inner split ring into driving engagement Vwith the external iiiteriorly tapered ring and an adjusting ring having screw threaded engagement with one of said rings and having abutting engagement on the other ring 2by the ad jiistment of which the rings are axially adjustable. i

4. In a clutch mechanism, an internally tapered clutch ring, an externally tapered clutch ring seated within the internally tapered ring, said inner ring being` split, and means for expanding said inner Split ring into driving engagement withV the external intei'iorly tapered ring, and a flanged ring having sciew threaded engagement with the outer ring and having a shoulder thereon abutting upon the larger lateral tace of the inner tapered ring for axially adjusting the outer ring in relation to the inner ring to compensate for wear and vary the engaging pressure. v

5. An expanding cone clutch comprising two concentrically arranged clutch members tion yto the otliei' and independent means for .effecting relative expansion and contraction jot ,one loi the members in relation to the other.

G. In a clutch -nfiechanism `an internally vtapered clutch ring, an externally tapered expanding ring seated With-in the internally tapered ring, a mounting for said rings, the internally tapered external ring being exzteriorly screw threaded and a revoluble -adjust-ing collar having threaded engagement with the external -iiiteriorly tapered ring and simultaneously abutting engagement upon be axial-ly adjusted in relation to :each other.

T. In a `clutch mechanism, an internally tapered ring, an externally tapered expandying ring engaging within` the `internally tapered ring, means tor expanding the inner ring, a mounting for said rings, and a i'evoluble adjusting collar carried by the mounting and having operative engagement with both ol" the rings for adjusting such rings axially in relation to each other, to vary the engaging relation of the rings independent ot the expansion ofthe inner ring.

8. In a clutch mechanism, an internally tapered ring, an externally tapered ring engaging' within the internally tapered ring, one oro said rings being expansible, and contractible, means ,governing the expansion and contraction of said ring, one of the rings being axially adjustable in relation to the .other ring independent of such expansive y and contractive movement, and a concentrically revolubly mounted abutment collar for one of the rings having lateral abutting engagement therewith, which by its concentric revoluble adjustment relative thereto eliects such relative axial adjustment of said rings.

9. In an expanding clutch, a 'lemale clutch member, an' expanding ring within the fe- -niale member, a mount-ing for said ring, said ring being internally enlarged for engage-V inent with said mounting, a recess` formed in such interior enlargement, oppositely disposed ralobets tormed in the inner faces of the recess, a key engaging in such rabbets and engaging with the mounting, the recess being extended beyond the bottom of such key leavingmaterial having thickness substantially equal to that ot' the ring at the bottoni ol said recess. Y

It). In an expanding clutch, a female clutch member, an `expanding ring Within the femaleV member, a mounting for said ring, spaced lugs projecting upon the interior of said ring, rabbets formed in the the inner ring by which the said rings may 195 adjacent faces of the lugs, a key engaging in said rabbets and having driving engagement with the mounting, the portion of the ringii'itermediz'ite the .lugs being; substantially equal in thiclnieSS to that beyond the lugs.

ll. in an expanding` clutch? a female meinber, au expanding ring` within said female. member` opposing spaced Shoulders.formed upon the interior of the ring7 a pair of levers interpivoted one upon the other, and interposed between said, Shoulders and having outward bearing' in opposite directions thereon, a reriproeatory wedge member' introdueible between the vt'ree ends ot said levers for oscillating said levers outwardly about their intel-pivotal Connection and by their pressure against Said shoulders expanding :.-iaid ring;` and a guide member overlying' the reeiprmzatory wedge and levers, Said lguide member being` movable in unison with the wedge and haring guidingl engagement with the expandingring.

10. In a friction eluteh, an exterior eluteh member and an expanding` split ring within the exterior eluteh member, the adjacent ends ot' the split ring having` rahbets Ytermed therein, a reeijln'oeatmy actuating member movable axially relative to the Clutch members ior expanding' the Split ring` and a guide finger upon the actuating member halvir 3 'tree reeiproeatory movement between the rahbets of the adjacent ends et the Split ring.

13. lu a friction eluteh, an exterior clutch member` an expanding split ring` within [he exterior member, opponitely disposed double rabbets lormed in the adjacentende of the y MLRL M. ANGLEMYER. WHQLIAM l. COFFMAN. 

